Paper-folding machine



Feb. 22 19,27.

J. O. HUNT PAPER FOLDING MACHINE Filed Dec. 24. 1923 3 Sheets-Sheet A If ATT NEYS Feb. 22, 1927. 1,618,711.

J. o. HUNT PAPER FLDING MACHINE Filed Dec. 24, 1923 3 Sheets-Sheet 2 Z7 1N VENToR Feb. z2, 1927.

1,618,711 J. o. HUNT PAPER FLDI-NG MACHINE Filed Dec. 24. 1923 3 Sheets-Sheet 3 i E 45 44 t,

f' 0 y f A TTORNE YS Patented Feb. 22, 1921. p .Y UNITED sT.1rrr.s-

. -f1,618,7 11" *PATENT oFrllcl-z.

JOHN o. HUNT, or BROOKLYN, NEW YORK, AssIGNoR To INDEPENDENT rAPEE MiLLs INc., or EnooxLYN, NEW Yoan, A coRroEArIoN or NEW Your;

PAPER-FOLDING MACHINE.

application mea member 24, 1929.v seri'ai No. 682,450.

M present invention relates to` a paper web as folded making it difficult to prop-- erly deliver. andstackthe folded web after the same has been cut and ejected from the apparatus. The object of my present invention is to overcome these and other. difiiculties by the provision of a paper folding machine in which the folder members are adjustable to position relatively to each other, being movable relatively to one another to feed the paper between the same and being adapted to be set in place relatively to one another to effect an even distribution of the tension as applied to the different sections of the folded web as the same is moved between the folder members and folded thereby. The apparatus also includes suitable devices over which the web is moved to suitably spread the same and apply a lateral tension thereto before the web enters the folding devices in order to insure the. proper spread of the web to prevent the same from being turned or folded otherwise than intended in passing through the folder device. The apparatus also includes suit-able roller or other devices for creasing the web after it has been folded and for delivering or feeding the folded web to suitable devices for severing the same transversely, preferably folding each severed section also transversely and stacking the sections thus severed from the web, which latter features, however, form no part of my present invention.

The paper folder machine made in accordance with this invention will be hereinafter more particularly described in conjunction with the accompanying drawings, in which,-

Fig. 1 is a diagrammatic side elevation and partial cross section illustrating the apparatus.

Fig. 2 is an end elevation and palitial sec- K tion onl line 2-2, Fig. l;

Fig. 3 is an enlarged plan of the folder device of the apparatus. l

Fig. 4 is an enlarged front elevation of the folding device.

Fig. 5 isa sectional plan on line 5 5, Fig. 4.

Fig. 6 is a sectional elevation on line (S7-6,

device.

Fig. 8 is a perspective view showing the manner in which-a web of paper is folded by the folder device.

Fig. 9 is a perspective view of the block forming one part ofthe folder device;

Fig. 10 is a perspective view ofa block forming part of another member of the folder device, and

Fig. 11 is a diagrammatic plan on an enlarged scale illustrating the manner in which the paper web passes from the folder device which is also shown in Fig. 3.

Referring to the drawing and more particularly at first to Figs. 1 and 2 thereof, the apparatus includes in part a reel frame comprising a base 10 upon which suitable uprights are mounted and provided with inclined faces 11 and 12 adapted to support the end portions of a spindle 13 upon which a reel of paper 14 is mounted. The paper as drawn from the reel passes over or against a roller 15 with which the paper is maintained in contact by the action of gravity causing the. paper reel and the spindle upon which it is mounted to pass down the inclined faces as the reel is unwound. The paper also passes over an auxiliary roller 16 before leaving the reel frame, as is clearly indicated in Fig. 1, in which figure also t e pape-r web is designated at 17 The paper web folding mechanism includes a base 18 upon which the frame 19 is supported and suitable folder devices, one of which is stationary and the other adjustably movable and eachof which includes a folder block and suitable folder members, as hereinafter described. The block of the stationary part of the folder device is indicated at 20 and is secured to the frame 19 by means ofscrews 21 or otherwise. block of the movable part of the folder device is indicated at 22. This is connected by means of screws 23 or otherwise to a suit- The . 65 7 is an` end elevation of the folder part of the folder device as hereinafter more members 35 and 26 adapted to slide on a post 27 secured to and extending from the frame 19. The bearing 26 is fitted with a stop screw 28 adapted at one end to bear against the frame 19 to determine the osition of the movable evice relativel to the stationary part thereof, and also wlth a set screw 29 by means of which the stationary part of the folder device may be fixed 1n any adjusted position.

The block 2O forming part of the fixed or stationary member of the folder dev ice is preferably double wedged .shape as 1ndicated in Fig. 10 of the drawing and may be made of wood, metal or any other suitable material. This member consequently has four triangular faces and a corresponding number of corners indicated res ectively Aat a, b, c, d. The face 30 of this fol er block is the rear face and is the face included between the corners a, b, (Z. This is the face which lies next the frame member 19. The side faces of the block 2O are indicated at 31, 32 and are defined respectivel between the edges a, b, c and d, b, c. T ese faces as clearly indicated in the drawing are inclined upwardly and their forward edges are inclined upwardly and outwardly. The outer face of the block 20 is indicated at 33 and is defined by the corners a, c; d. This face inclines upwardly and outwardly and terminates at the point or corner c which is in line with the corner b at the apex of the inner face 30. Lying between the inner face 30 of the block member 20 and the frame 19 is a back or liner 34 preferably made ofl sheet metal, althou h, as will be understood, it may be forme of any suitable material. Exteriorly of the edges of the back face 30 of the block member 20 this liner 34 is extended to form folder 36 respectively which are suitably shaped to conform to but are spaced from the oppositely disposed sides 31 and 32 of the block 20, the lower portions of these folder members being curved to gradually bring a section of paper web between the same and parts of cooperating members secured to the movable part of the folder particularly described.

The block 22 forming part of the movable member of the fo der device is made in the form of a pyramid and consequently has four faces defined between the apex e and the corners of the base as indicated at j', g, h and z'. The inner face of this block is indicated at 37 and is defined by the corners e, z and h and this is the face which lies against the head 24 and is connected thereto. The outer face of this block 22 is indicated at 38 and isdefined by the corners e, f and g. The side faces of th1s plane as the side face 32 of block. The stationary block the same angles as the side faces 31 and 32 of the block 20 so that when in position for use the outer face 38 of the block 22 assumes a position which is juxtaposed to the faceA 33,while the face 39 of this mov'- able block lies in the same plane as the face 31 of the stationary block and the side face 40 of the movable block lies in the same the stationary 22 at the opposite side faces thereof has folder members 4l and 42 suitably secured thereto. These folder members conform approximately to the outlines of the faces of the block and to the corresponding faces of the fixed or stationary block with which they are parallel so that at their upper extremities these folder members are of approximately the same width as the top edge of the stationary block. Also as indicated in Figs. 4 and 5 of the drawin the folder member 42 may have associated t erewith an auxiliary folder 43 for a purpose to be hereinafter more particularly described.

rIhe apparatus also includes a set of rollers for spreading and 4placing a lateral tension in the parts of the web as the same is fed to the folder devices. For this purpose I may employ suitable brackets 44. These brackets are connected to the end faces of a base 45 by rivets 46 or otherwise to which the movable block 22 is also connected. Y Associated with the brackets 44 are bracket arms 47 and 48. These brackets arms 47 and 48 are connected to the base 45 and the brackets 44 in any suitable manner. Journaled between the ends of the brackets 44 is a roller 49. Journaled between one end of the bracket 45 and the end of the bracket 48 is a roller 50, and journaled between the other bracket 44 and the end of the bracket arm 47 is a roller 51. The axes of the rollers 49, 50 and 51 all lie in the same horizontal plane, but the axes of the l rollers 50 and 51 are offset at a predeter mined angle, preferably at an angle of approximately 20 to the axis of the roller 49. Furthermore each of the rollers 50 and 51 are substantially one-.half the length of the roller 49 for the vpurpose of folding the paper in the manner as designed trated in Fig. 8 of the drawing. The inner of these sections of the paper web is lindicated at 52. The intermedlate sections are indicated at 53 and 54 and the outer nar- 5 rower sections are indicated at 55 and 56. After the paper web has been folded it is carried throughrolls 57 and 58 to suitably crease the same and from these rolls 57 and 58 it passes over a drum 59 and a feed .0 roll 60 for delivering the paper to asuitable severing mechanism and other devices which form no art of my present invention.

In the use of) the apparatus, as hereinbefore described, the parts of the movably ad- .5 justable member of the folder device are shifted along the post 27 away from the fixed members of the device in order to permit the operator to readily feed the web to the folder mechanism. With the web placed :u over the parts of the movable member of the folder device the same is shifted to its associated position with the fixed member. In so doing as will be understood the web passes over the rollers 49, 50 and 51 and is 5 stretched laterally thereby causing a prede- .te-rmined extent of lateral tension to be exerted against the web. It will also be apparent that the folder member 41 p asses within the folder member 35 and the folder i6 member 42 passes within the folder member 36, while the folder member 36 passes within the auxiliary folder member 43, the parts being adjusted to position in such a manner as to place the desired degree of tension on i5 the paper web while being drawn through or between these folder members, this naturally being determined upon by the nature or texture of the paper which is being folded. In this folding operation, as will be apparent, the adjacent sections 52 and 53 of the web are folded over the edge of the folder member 41, the web section 52 passing between the folder member 35 and the adjacent face of the folder member 41, while the web section 53 passes between the other face of the folder member 41 and the face 31 of the stationary block 20, while the web section 54 passes between the face 32 of the stationary block and the adjacent face of 0 the folder member 42, these intermediate web sections 52 and 54 being folded over the upper corner of the stationary block as indicated at c. The web sections 54 and 55 are folded over the edge of the folder member 42 and the web section 55 passes between the outer face of the folder member 42 and the inner face of the folder member 36. The outer sections 55 and 56 are folded over the edge of the folder member 36 and the 0 outer web section 55 passes between the outer face of the folder member 36 and the inner face of the folder member 43.

It will be understood that the brackets and rollers 49, 5() and 51 may be adjustable l? relatively to the lower edges of the movable block so as to bring the paper web as it passes over the rollers into the proper position to be fed directly between the folder members, this in turn depending upon the nature of the paper being handled by the machine. If necessary also the creaser rollers 57 and 58 may be adjustable to position in order to varythe extent of the crease as made in the folded paper.

I claim as n1 invention:

1. In a machine for folding a web of traveling paper into a plurality of longitudinal sections, folder members adjustable to position relatively to oneanother for 'longitudinally folding a paper web in passing between the same, and devices relatively movable with respect to one of the folder members, for stressing the web transversely thereof before it enters the said folder members the relative positions of the two folder members determining the stress imposed on the web.

2. In a machine for folding a web of traveling paper into a plurality of longitudinal sections, folder members adjustable to position relativelyto one another for longitudinally folding a paper web in passing between the same, devices relatively movable with respect to one of the folder members, for stressing the web transversely thereof as it enters the folder members, the relative positions of the two folder members determining the stress imposed'on the web, and means for creasing the folded web after it leaves the folder members.

3. In a machine for folding a web of traveling paper into a plurality of longitudinal Sections, a stationary folder member, and a folder member shiftable to position toward and away from the stationary folder member, one of the folder members having a plurality of cooperating substantially triangular faces, each of which has an edge in common with the others for longitudinally folding the web in passing between the said folder members.

4. In a machine for folding a web of traveling paper into a plurality of longitudinal sections, a stationary folder member, a folder member shiftable to position relatively to the stationary folder member, and adapted to coact therewith for longitudinally folding a web of paper in passing between the said folder members, and devices attached to one of the folder members for stressing the web transversely thereof before it passes between the said folder members whereby the relative positions of the two 'folder members determines the stress imposed on the web.

5. In a machine for folding aweb of traveling paper into a plurality of longitudinal sections, a stationary folder member, a folder member shiftable to positiony relatively to the Vstationary folder member,

and adapted to coact therewith for longitudinall folding a aper web in passing between the said fol er members, the movement of the shiftable folder member permitting the threading of the paper web between the folder members, devices for stressing the web transversely thereof before it passes between the stationary and shiftable folder members, and means for creasing the folded paper web after it passes from the said folder members.

6. Ina machine for folding a web of traveling paper into a plurality of longitudinal sections, a stationary folder member, a folder member shiftable to position toward and away from the stationary folder member to determine the space between the said members when in operation, devices variably positionablewith respect to one of the folder members, for stressing the pa er web transversely thereof as it enters tie said folder members, the movement of the shiftable folder member permitting the threading of the web between the folder members, and

' the relative positions of the two folder mem bers determining the transverse stress imposed on the web, and means for creasing the folded web after it passes lfrom the said folder members.

7. In a machine for folding a web of traveling paper into a plurality of longitudinal sections, a stationary folder member, a'folder member shiftable to position relatively to the stationary folder member, one of the folder members having three cooperating substantially triangular faces, the vertex of the central face being at one end of a base common to the other two faces and means for adjusting the extent Vto which the last aforesaid folder member is shiftable toward the stationary folder member to determine the space between the said folder members when in operation, the said folder members being adapted to cooperate with one another to produce a pluralit of longitudinal folds in a paper web whi e the same is passing between them.

8. In a machine for folding a web of travcling paper into a plurality of longitudinal sections, a stationary folder member, a variably positionable folder member, one of the folder members being shaped like a double wedge, with the thin edges at opposite ends thereof, and substantially at right angles to each other, a frame upon which the variably positionable folder member is mounted, devices upon which the said frame and its folder member are shiftable to position toward and away from the said stationary folder member, the movement of the movable folder member permitting the threading of the web between the two folder members, and devices for determining the relative operating positions of the said folder members, which are adapted to cooperate with one another in producing a plurality of longtudinal' folds 1n a paper web while passing tween them.- v

9. In a machine for folding a web of travelmg paper into a plurality of longitudinal sections, a stationary folder member, a variably positionable folder member, a frame upon which the variably positionable folder member is mounted. devices upon which the frame and its folder member are shiftable toward and away from the said stationary folder member, one of the folder members having a plurality of substantially triangular faces, the movement of the movable folder member away from the stationary folder member permitting the threading of the web between the two folder members, means for determining the relative operating positions of the said folder members which are adaptedto cooperate with one another in producing a plurality of longitudinal folds in a paper web while passing between the same, and means for securing the said frame and its movable folder member in an operative position relatively to the said stationary folder member.

10. In a machine for folding a web of traveling paper into a plurality of longitudinal sections, a stationary folder member, a variably positionable folder member, a frame upon which the movable folder member is mounted, devices upon which the frame and its folder'member are shiftable toward and away from the stationary folder member, means for determining the relative operating positions of the said folder members, the folder members being adapted to cooperate with one another for producing a plurality of longitudinal folds in a paper web while passing between them, means for securing the said frame and its folder member in an operative position relatively to the stationary folder member, means for stressing the paper web transversely thereof before 1t enters the folder members, and means for creasing the web at the folds.

11. In a machine for folding a web of traveling paper into a plurality of longitudinal sections, a statonary folder member, a variably positionable folder member, a frame upon which the movabe folder member is mounted, devices upon which the frame and its folder member are shiftable toward and away from the stationary folder member, means for determining the relative operative positions of the said folder members, the said folder members being adapted to cooperate with one another for producing a plurality of longitudinalfolds in a paper web While passing between them, means for securing the said frame and its folder member in an operative position relatively to the said stationary folder member, and angularly placed rollers over which the paper web travels, and by which the web is stressed transversely before the same enters the said folder members.

of substantially triangular faces, folder del comprisin 12.111 a machine for folding a web of traveling paper into a' plurality of longitudinal sections, a stationa folder. member comprising a block having a plurality substantia ly flat triangular faces, and fold,.-

er devicesassociated therewith, and alfolde'r member shiftable to position relatively to the said stationary folder member and oomprising a block and folder devices associated therewith, the said block and folder devices associated with the said folder member being adapted to cooperate with the said block and folder devices of the stationary folder member-for producing a plurality of longitudinal' folds in a paper web while passing between the said folder members.

14. ln a machine for folding a web of traveling paper into a plurality of longitudinal sections, a stationary folder member comprising a block having some of its faces substantially triangular and folder devices associated therewith, a folder member compri-sin@ a block having some of its faces substantially triangular and folder-devices associated therewith, the said block and folder devices associated with the said folder member being adapted to cooperate with the said block and folder devices of the stationary folder member for producing a plurality of longitudinal folds in apaper web while passing between the said folder members, and means for adjusting the said folder member to position, and securing the same in place relatively to the said stationary folder member.

15. 'ln a machine for folding a web of traveling paper into a pluralit of longitudinal sections, a stationary fo der member comprising a double wedge shaped block having an outer downwardly inclined face and oppositely disposed upwardly inclined faces, and folder plates overlying the said oppositely disposed side faces, and a folder member associated with the said stationary folder member and adapted to cooperate therewith for producing a plurality of lon-J gitudinal folds in a web of paper while passing between the folder members.

16. In a machine for folding a web of traveling paper into a pluralit of longitudinal sections, a stationary fo der membr comprising e, double wedge shaped block having an` outer downwardly inclined face y and oppositely dis Ased upwardly inclined faces .andfolder p ates overlying the-said opposltely disposed side faces, a folder member comprising a vblock of pyramidal form havin an outer upwardly inclined face adapte to cooperate withthe down-A wardly inclined outerface of the aforesaid block and upwardly inclined oppositely disposed side faces, and folder plates associated `with the oppositely disposed side faces of the 4pyramidal block and adapted when Ithe Inova le folder member is adjusted to position to lie within the folder platesassociated with the double wedge shaped block whereby the folder-members and the parts thereof cooperate to effect a plurality of t longitudinal folds` in a passing between the same.

17. n a machine for folding a web of paper web while traveling paper into a plurality of longitu` dinal sections, 'a stationary folder member comprising a double-wed e shaped block having an outer downwar ly inclined face and oppositely disposed upwardly inclined faces and folder plates overlying the said oppositely disposed side faces, a folder member comprising a block of pyramidal form having an outer upwardly inclined face adapted to cooperate with the downwardly inclined outer face of the aforesaid block and upwardly inclined oppositely disposed side faces, and folder plates associated with the oppositely disposed side faces of the pyramidal block and an auxiliary folder plate associated with one, of the last aforesaid folder plates, the said outer faces of the said blocks and the folder plates associated therewith being adapted to cooperate for producing a plurality of folds in a web of paper while the same is passing between the said folder members.

18. In a machine for folding a web of traveling paper into a plurality of longitudinal sections, a stationary folder member comprising a double wedge shaped block having an outer downwardly inclined face and oppositely disposed upwardly inclined faces and folder plates overlying the said oppositely disposed side faces, a folder member comprlsing a block of pyramidal form havin@- an outer upwardly inclined face adapted .to cooperate with the downwardly inclined outer face of the aforesaid block and upwardly inclined oppositely disposed side faces, folder plates associated with the oppositely disposed faces of the said pyramidal block, and an auxiliary folder plate associated with one of the last aforesaid folder plates, the folder plates associated with the pyramidal block being adapted to pass between the folder plates associated with the double wedge shaped block and the said auxiliary folder plate bein adapted to receive a portion of the fol er plate associated llO v where y the said outer inclined faces'of the said blocks and the oppositely disposed inclined faces of the same, together with the said folder plates cooperate with each other for producing a plurality of folded sections in a paper web, the folded sections with the exception of one outermost section being of substantially the same width while the outermost section is folded into a plurality of sections of lesser width.

" 19. `In a machine for folding a Vweb of traveling paper into a plurality of longitudinal sections, the combination of means for folding the web longitudinally, along a line substantiall at kthe center of the web, and folder members for folding the web in directions opposite to theirst fold, these second foldings being along longitudinal lines between the first fold and the respective edges of the web, and means for creasing the folds.

20. In amachine for folding a web of traveling paper into a plurality of longitudinal sections, the combination of means for folding the web longitudinally, along a line substantiall at the center of the web, a cooperating older member for folding the web reversely, in a direction opposite to the center fold, along a line parallel to the center fold and `to one side of the center fold., and cooperating folder mechanism for folding the other side of the web, on the other side of the center fold, twice, along lines parallel to the other folds, the two last folds being reverse folds 'with respect-to each other, and means for creasing the folds thus formed.

21. In a machine for folding a web of traveling paper into a lurality of longitudinal sections, the com ination of a folder block in `the-shape of a double wedge, the thin edges of the wedge block being at opposite ends thereof and extending in directions substantially at right angles to each other, co-operating folder members for folding the web around the said block, and meansfor creasing thel folds thus formed.

[22.111 a machine for folding a web of traveling paper into a y hirality of longitu'di. nal sections, the com ination of a Yfolder' block in the shape of a double wedge, the

either side of the folder block, said parts cooperating to fold the web three times, alon n lon itudinally extending, parallel lines,l eac i fol ,being in a reverse direction with respect to an adjacent fold.

traveling paper into a plurality of longitudinal sections, the com block in the shape of a double wedge, the thin edges of the wedge block beingl atopposite ends thereof and extending in directions substantially at right an'les' to each other, a cooperating folder mem er at either side of the folder block, said arts cooperating to fold the web longitu inall along a line substantially .at the center o the web, and also to fold the web along longitudinal lines at either side of the center fold, said last two folds being reverse folds with respect to the center fold.

24. In a machine for folding a web of traveling paper into a plurality of longitudinal sections, the combination of means comprising a folder block in the shape of a double wedge, the thin edges of the wedge block being atfopposite'ends' thereof and extending in directions substantially at right angles to each other, for folding the web longitudinally, along a line jsubstan tially at the center of the web, apcooprating folder member for folding the web re-A versely, in a direction opposite to the center fold, along a line parallel to the center'fold and to one side of the center fold, and co3 operatin folder mechanism for foldin "the other site of the web, on the other si e of the center fold, twice, along lines parallel to the other folds, the two last folds being reverse folds with res ect t0 each other, and means for creasing tlie folds thus formed.

JOHN O. HUNT.

23. In a machine for folding a web of' ination of a folder- Signed by me this 19th day of December,v 

